WO2020010539A1 - 折叠伸缩机构、螺旋桨保护装置及旋翼无人机 - Google Patents

折叠伸缩机构、螺旋桨保护装置及旋翼无人机 Download PDF

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Publication number
WO2020010539A1
WO2020010539A1 PCT/CN2018/095249 CN2018095249W WO2020010539A1 WO 2020010539 A1 WO2020010539 A1 WO 2020010539A1 CN 2018095249 W CN2018095249 W CN 2018095249W WO 2020010539 A1 WO2020010539 A1 WO 2020010539A1
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WO
WIPO (PCT)
Prior art keywords
connection
mechanism according
folding
main body
telescopic mechanism
Prior art date
Application number
PCT/CN2018/095249
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English (en)
French (fr)
Inventor
王超瑞
熊荣明
Original Assignee
深圳市大疆创新科技有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 深圳市大疆创新科技有限公司 filed Critical 深圳市大疆创新科技有限公司
Priority to CN201880011213.0A priority Critical patent/CN110325439A/zh
Priority to PCT/CN2018/095249 priority patent/WO2020010539A1/zh
Publication of WO2020010539A1 publication Critical patent/WO2020010539A1/zh
Priority to US17/144,430 priority patent/US20210129979A1/en

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B64—AIRCRAFT; AVIATION; COSMONAUTICS
    • B64C—AEROPLANES; HELICOPTERS
    • B64C11/00—Propellers, e.g. of ducted type; Features common to propellers and rotors for rotorcraft
    • B64C11/001—Shrouded propellers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B64—AIRCRAFT; AVIATION; COSMONAUTICS
    • B64U—UNMANNED AERIAL VEHICLES [UAV]; EQUIPMENT THEREFOR
    • B64U10/00—Type of UAV
    • B64U10/10—Rotorcrafts
    • B64U10/13—Flying platforms
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B64—AIRCRAFT; AVIATION; COSMONAUTICS
    • B64U—UNMANNED AERIAL VEHICLES [UAV]; EQUIPMENT THEREFOR
    • B64U30/00—Means for producing lift; Empennages; Arrangements thereof
    • B64U30/20—Rotors; Rotor supports
    • B64U30/29—Constructional aspects of rotors or rotor supports; Arrangements thereof
    • B64U30/293—Foldable or collapsible rotors or rotor supports
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B64—AIRCRAFT; AVIATION; COSMONAUTICS
    • B64U—UNMANNED AERIAL VEHICLES [UAV]; EQUIPMENT THEREFOR
    • B64U30/00—Means for producing lift; Empennages; Arrangements thereof
    • B64U30/20—Rotors; Rotor supports
    • B64U30/29—Constructional aspects of rotors or rotor supports; Arrangements thereof
    • B64U30/299—Rotor guards

Definitions

  • the invention relates to a folding telescopic mechanism, a propeller protection device and a rotary wing drone.
  • the related paddle protective cover can be folded, but the structural strength of the connection part is not high when it is deployed and used, and it is easy to be damaged.
  • the invention provides a folding telescopic mechanism, a propeller protection device and a rotary wing drone, wherein the folding telescopic mechanism can be folded and telescoped, and the strength of the connection part can be improved during deployment and use.
  • a folding telescopic mechanism including:
  • a first body having a first connection portion
  • a second body which is rotatable relative to the first body and has a second connection portion
  • the first connection portion and the second connection portion are assembled in a movable manner, and have a contracted state and an extended state; in the contracted state, the first connection portion and the second connection portion at least partially overlap and restrict Relative rotation between the first body and the second body; in the extended state, the first connection portion is separated from the second connection portion, and the second body is rotatable and folded on the first body.
  • a propeller protection device which includes the folding telescopic mechanism as described in the foregoing embodiment; the first body is a first propeller protective cover, and the second body is a second Paddle protective cover.
  • a rotary wing drone including a body, a first propeller and a second propeller connected to the body, and a propeller protection device as described in the foregoing embodiment;
  • the first propeller protective cover is connected to the first propeller
  • the second propeller protective cover is connected to the second propeller
  • the second body is rotatable relative to the first body, and the first connection portion of the first body and the second connection portion of the second body are assembled in a movable manner and have a contracted state and an extended state.
  • the second body In the extended state, the second body can be rotated and folded on the first body, which can save the occupied area; in the retracted state, the relative rotation of the first body and the second body is restricted, and the first connection portion and the second connection portion At least partially overlapping, which increases the structural strength of the first body and the second body at the junction in this state.
  • FIG. 1 is a schematic structural diagram of a rotary wing drone according to an embodiment of the present invention
  • FIG. 2 is a schematic diagram of an explosion structure of a propeller protection device according to an embodiment of the present invention
  • 3 and 4 are partial structural diagrams of a propeller protection device according to an embodiment of the present invention under different perspectives;
  • FIG. 5 is a schematic structural diagram of a propeller protection device in a contracted state according to an embodiment of the present invention
  • FIGS. 6 and 7 are partial cross-sectional views of a propeller protection device in a contracted state according to an embodiment of the present invention.
  • FIG. 8 is a partial cross-sectional view of a rotating connection piece and a first connection portion of a propeller protection device in a retracted state according to an embodiment of the present invention
  • FIG. 9 is a partial cross-sectional view of a rotating connection piece and a first connection portion of a propeller protection device in an extended state according to an embodiment of the present invention.
  • FIG. 10 is a cross-sectional view of a propeller protection device according to an embodiment of the present invention in an extended state and folded;
  • FIG. 11 is a perspective view of a propeller protection device according to an embodiment of the present invention in an extended state and folded;
  • FIG. 12 is a partial structural schematic diagram of a propeller protection device in a contracted state according to an embodiment of the present invention.
  • FIG. 13 is a partial structural schematic diagram of a propeller protection device in an extended state and not folded according to an embodiment of the present invention.
  • a rotor drone includes a body 9, first and second propellers 7 and 8 connected to the body 9, and a propeller protection device 1.
  • the body 9 may include a body 91 and an arm 92, and the arm 92 is connected to the body 91.
  • the first propeller 7 and the second propeller 8 are connected to adjacent arms 92.
  • the propeller protection device 1 connects the first propeller 7 and the second propeller 8.
  • the rotor drone can be a four-rotor drone as shown in FIG. 1, of course, it can also be a six-rotor, eight-rotor, and other drones.
  • the specific number of propellers can also be based on the specific situation of the rotor drone set.
  • the first and second propellers may be adjacent propellers on a rotary wing drone.
  • the propeller protection device 1 includes a folding telescopic mechanism.
  • the foldable telescopic mechanism includes a first body 4 and a second body 5.
  • the first main body 4 may be a first propeller protective cover
  • the second main body 5 may be a second propeller protective cover, and the two may be folded and telescopically connected.
  • the first propeller protective cover is connected to the first propeller 7, and the second propeller protective cover is connected to the second propeller 8, so as to protect the first propeller 7 and the second propeller 7.
  • a folding and retracting mechanism is used as an example for the propeller protection device 1 for development and description. It can be understood that the folding and telescoping mechanism of the embodiment of the present invention can also be applied to other devices, and the foldable and telescoping connection between the first body and the second body of the device may be implemented, which is not specifically limited.
  • the first body 4 may include a first base portion 40 and a first connection portion 2.
  • the first connection portion 2 may be integrally formed on the first base portion 40 to ensure the strength of the first body 4.
  • the possibility that the first connecting portion 2 is connected to the first base portion 40 through an external connection is not excluded.
  • the second body 5 may include a second base portion 50 and a second connection portion 3, and the second base portion 50 and the second connection portion 3 are connected.
  • the first base portion 40 and the second base portion 50 may be symmetrical structures.
  • the first base portion 40 may include a first curved portion 401, a first beam portion 402, and a first central connection portion 403.
  • the second base portion 50 may include a second curved portion 501, a second beam portion 502, and a second central connection portion 503.
  • the first arc-shaped portion 401 and the second arc-shaped portion 501 are foldably and telescopically connected through the first connection portion 2 and the second connection portion 3.
  • the first curved portion 401 is connected to the first central connecting portion 403 through the first beam portion 402, and the first central connecting portion 403 is connected to the paddle seat of the first propeller 7, so as to realize the first body. 4 Connection to the first propeller 7.
  • the number of the first beam portions 402 is not limited, and is, for example, three.
  • first base portion 40 and the second base portion 50 are not limited to this, for example, the first base portion 40 may also be a structural form including a connected ring portion and a connecting arm, and the second base portion 50 may also be the same.
  • the first base portion 40 is provided with a first connection portion 2 on its connection arm, and the second base portion 50 may be provided with a second connection portion 3 on its connection arm, thereby achieving a folding and telescopic connection.
  • the second connection portion 3 may include a connection main body portion 31 and a rotation connection member 32.
  • connection body portion 31 is fixed to the second base portion 50. It can be understood that the fixing manner of the connection main body portion 31 on the second base portion 50 includes a manner in which the connection main body portion 31 is integrally formed on the second base portion 50, and other methods, for example, a screw locking method and the like.
  • the rotating connecting member 32 may include a flat plate portion 321 and a raised portion, as shown in FIGS. 3, 8 and 9.
  • the raised portion may include at least two first ear pieces 322 and at least two second ear pieces 323. These first ear pieces 322 are disposed on the flat plate portion 321 and are arranged in a straight line.
  • the first rotating shaft 61 can pass through the first ear piece 322.
  • These second ear pieces 323 are disposed on the flat plate portion 321 and are arranged in a straight line.
  • the second rotating shaft 62 can pass through the second ear piece 323.
  • the first ear piece 322 and the second ear piece 323 may be symmetrically arranged on both sides of the flat plate portion 321, so that the rotation connecting member 32 is U-shaped when viewed from the side and the front.
  • the protruding portion protrudes upward from the upper surface of the flat plate portion 321 so that the axes of the first rotating shaft 61 and the second rotating shaft 62 are higher than the flat plate portion 321.
  • the raised portion raises the first rotating shaft 61 and the second rotating shaft 62 higher than the surface of the flat plate portion 321, and can increase the rotatable angle of the rotating connecting member 32 relative to the first connecting portion 2 and the connecting main body portion 31 to a certain extent. Rotatable angle.
  • the flat plate portion 321 can play a certain resistance function.
  • Corresponding shaft holes may be provided on the connecting body portion 31, as shown in Figs. 3, 6 and 7.
  • the middle portion of the first rotating shaft 61 is inserted into the convex portion of the rotation connecting member 32, and the end of the first rotating shaft 61 is inserted into the shaft hole of the main body portion 31.
  • the above-mentioned arrangement enables the rotation connecting member 32 to rotate relative to the connection main body portion 31, so that the connection main body portion 31 can drive the second base portion 50 to rotate relative to the rotation connection member 32.
  • the first connecting portion 2 may include two first side walls 211 connecting the first base portion 40, and a first upper wall 212 is disposed above the two first side walls 211.
  • the first upper wall 212 may not be provided, and the tops of the two first side walls 211 may be opened to leave a certain folding space for the rotary connecting member 32.
  • the first side wall 211 may be provided with a guide portion 20.
  • the guide portion 20 may be a linear chute.
  • the guide portion 20 may also be a linear guide rail, which is not limited herein.
  • the middle portion of the second rotating shaft 62 is inserted into the convex portion of the rotation connecting member 32, and the end of the second rotating shaft 62 is inserted into the linear chute.
  • the above-mentioned arrangement allows the rotary connecting member 32 to slide relative to the first connecting portion 2 along the linear chute, and further enables the second connecting portion 3 to move relative to the first connecting portion 2.
  • the axial direction of the second rotating shaft 62 is perpendicular to the sliding direction of the slide (that is, the longitudinal direction of the linear chute). When sliding outward to the end of the linear chute, the rotating connecting member 32 can be rotated relative to the first connecting portion 2 to move closer to and above the two first side walls 211 of the first connecting portion 2 and fold.
  • the shape of the rotary connecting member 32 can also be adjusted adaptively to ensure that the guide portion 20 can reciprocate and rotate along the guide portion 20.
  • Rotating the connecting member 32 can drive the connecting body portion 31 and the second base portion 50 to move away from the first connecting portion 2 and the second connecting portion 3.
  • the rotating connecting member 32 can be rotated relative to the guide portion 20 through the second rotating shaft 62 to realize the second connecting portion 3 and the first
  • the relative rotation of a connecting portion 2 enables the rotation between the second body 5 and the first body 4, as shown in FIG. 9.
  • the connecting main body portion 31 can be rotated relative to the rotating connecting member 32 through the first rotating shaft 61, so that the second main body 5 and the first main body 4 can be folded relative to each other, as shown in FIGS. 10 and 11.
  • first connection part 2 and the second connection part 3 are far away
  • first connection part 2 and the second connection part 3 are far away in the extended state
  • first connection part is in the contracted state 2 is closer to the second connection portion 3.
  • Rotating the connecting member 32 can drive the connecting main body portion 31 and the second base portion 50 to move the first connecting portion 2 and the second connecting portion 3, as shown in FIG. 6, so that the second connecting portion 3 and the first connecting portion 2 is in a contracted state.
  • the rotation connection member 32 and the connection main body portion 31 are at least partially overlapped, the relative rotation between the rotation connection member 32 and the connection main body portion 31, and the relative rotation between the rotation connection member 32 and the first connection portion 2 are limit. That is, in the contracted state, the relative rotation of the first connection portion 2 and the second connection portion 3 is restricted, and the second body 5 and the first body 4 cannot rotate relative to each other and cannot be folded.
  • first body 4 and the second body 5 are retractable, they can only be rotated and folded together in the extended state, and they are in a contracted state when they are assembled and deployed on the propeller. In the retracted state, the relative rotation of the first body 4 and the second body 5 is restricted, and the first connecting portion 2 and the second connecting portion 3 are at least partially overlapped, which improves the first body 4 and the second body in this state. Structural strength of the main body 5 at the connection. Furthermore, it is ensured that when the propeller protection device 1 is assembled on the rotor drone, it is not easy to be relatively rotated by external force.
  • the rotary connecting member 32 is rotatably connected to the main body portion 31 through the first rotary shaft 61, and is rotatably connected to the first connecting portion 2 through the second rotary shaft 62, so as to achieve the extension state.
  • the second body 5 is rotated and folded on the first body 1.
  • the axial directions of the first rotating shaft 61 and the second rotating shaft 62 are parallel, and the axial direction is perpendicular to the direction in which the rotary connecting member 32 reciprocates along the guide portion.
  • the rotating connecting member 32 can also be connected to the first connecting portion 2 in a rotatable manner only through the second rotating shaft 62; and the rotating connecting member 32 and the connecting main body portion 31 need not be connected in a rotatable manner, such as The rotating connection member 32 and the connection main body portion 31 may be fixedly connected.
  • the first connection portion 2 may further include a cavity portion 21.
  • the cavity portion 21 may include a first side wall 211, a first upper wall 212, and a first lower wall 213.
  • the first upper wall 212 and the first lower wall 213 are vertically distributed, and the first upper wall 212 and the first lower wall 213 are connected to the first side wall 211 to form a cavity portion 21.
  • the first side wall 211, the first upper wall 212, and the first lower wall 213 may all be connected to the front end surface of the first base portion 40, that is, the front end portion of the first base portion 40 may be regarded as the rear wall of the cavity portion 21.
  • the front end surface of the cavity portion 21 is formed with an opening, so that the rotary connection member 32 can enter and exit the cavity portion 21 from the front end surface of the cavity portion 21 when moving.
  • the rotary connecting member 32 protrudes from the cavity portion 21; in the contracted state, the rotary connecting member 32 is received in the cavity portion 21.
  • the guide portion 20 may be disposed on the first side wall 211 of the cavity portion 21.
  • the guide portion 20 may be a linear chute that penetrates the first side wall 211, or may be a linear chute that does not penetrate the first side wall 211.
  • the second rotary shaft 62 connected to the second ear piece 323 is restricted by the groove edge of the linear chute and cannot be removed from the linear chute.
  • the first rotary shaft 61 connected to the first ear piece 322 is located in the linear chute. Outside.
  • the flat plate portion 321 is movable along a linear chute.
  • the length of the linear chute can ensure that the first body 4 and the second body 5 can be rotated and folded when the flat plate portion 321 extends out of the cavity portion 21, and on the other hand, can ensure that the flat plate portion 321 can be retracted as much as possible. It can be accommodated in the cavity portion 21, for example, only the portion where the first rotation shaft 61 is located can be left outside, while the second rotation shaft 62 abuts against the end of the linear chute.
  • the flat plate portion 321 and the first upper wall 212 of the cavity portion 21 can abut against each other when they are relatively rotated to a certain angle, so as to limit the rotation angle of the rotation connection member 32 relative to the first connection portion 2 in the extended state.
  • the rotatable angle of the rotating connecting member 32 relative to the first connecting portion 2 in the extended state is 90 degrees.
  • the flat plate portion 321 is rotated to 90 degrees with respect to the first connection portion 2, the flat plate portion 321 abuts against the first upper wall 212 of the cavity portion 21.
  • a stopper may also be provided on the cavity portion 21 to resist the flat plate portion 321 when the flat plate portion 321 is rotated to 90 degrees relative to the first connection portion 2.
  • the specific structure of the stop is not limited.
  • connection main body portion 31 has a storage space to receive the first connection portion 2 in a contracted state. That is, in the contracted state, the first connecting portion 2 has not only a superimposed relationship with the rotary connecting member 32 but also a superimposed relationship with the connection main body portion 31. That is, in the contracted state, the rotary connection member 32 is accommodated in the first connection portion 2, and the first connection portion 2 is accommodated in the accommodation space of the connection main body portion 31, which can further increase the strength of the folded portion. It can be understood that, in the contracted state, the first connection portion 2 may not be accommodated in the connection main body portion 31, but only needs to be in contact with the connection main body portion 31 and cannot be relatively rotated.
  • the connection main body portion 31 may include a second upper wall 311, a second lower wall 312, and a second side wall 313 connected between the second upper wall 311 and the second lower wall 312, as shown in FIGS. 3 and 7.
  • the second upper wall 311, the second lower wall 312, and the second side wall 313 surround a receiving space capable of receiving the first connecting portion 2.
  • the second upper wall 311 is shorter than the second lower wall 312, so that the receiving space is divided into a first space and a second space.
  • the second space is closer to the first body 4 than the first space, the first space is surrounded by the second lower wall 312, the second upper wall 311, and the second side wall 313, and the second space is surrounded by the second lower wall 312 and the second side
  • the wall 313 is enclosed.
  • the rotary connecting member 32 is rotatably connected to the second side wall 313 where the first space is located, and the first connecting portion 2 is accommodated in the second space in a contracted state.
  • connection main body portion 31 is not limited to this.
  • the lengths of the second upper wall 311 and the second lower wall 312 may be equal and symmetrically disposed.
  • the first connection portion 2 When the first connection portion 2 is accommodated in the second space, it may be surrounded by the second upper wall 311, the second lower wall 312, and the second side wall 313.
  • the second lower wall 312 may not be provided, and the second upper wall 311 may be used to restrict rotation.
  • the second upper wall 311 is in contact with the first connecting portion 2 in a contracted state, so that when the connecting main body portion 31 and the first connecting portion 2 have a relative movement tendency, the second upper wall 311 abuts against the first connecting portion 2 To limit relative rotation. It can be understood that a stopper can be provided on the connection main body portion 31 to abut the first connection portion 2 to restrict relative rotation, and is not limited to the second upper wall 311.
  • the second upper wall 311 can be combined with the first connection portion 2 in a contracted state, so that the connection between the second connection portion 3 and the first connection portion 2 is smooth, and the overall appearance quality is improved.
  • the second upper wall 311 can resist the rotation connection member 32 at a certain rotation angle to limit the rotation angle.
  • the rotatable angle of the connecting body portion 31 relative to the rotating connecting member 32 is 90 degrees.
  • the end portion of the first connection portion 2 near the second body 5 (ie, the front end of the first connection portion 2) is provided with a limit stage 22, as shown in Figs. 4 and 7.
  • the second lower wall 312 and the first rotating shaft 61 are vertically distributed to sandwich the position-limiting table 22 in the middle.
  • the limiting stage 22 is disposed at the front end of the first connecting portion 2 and is located below the rotating connecting member 32.
  • the first connecting portion 2 will enter the receiving space connected to the main body portion 31, the limiting table 22 contacts the second lower wall 312, and the first rotating shaft 61 is retracted onto the limiting table 22, thereby limiting the table.
  • 22 is located between the second lower wall 312 and the first rotating shaft 61, and is restricted by the second lower wall 312 and the first rotating shaft 61, thereby ensuring that the connection between the main body portion 31 and the first connection portion 2 cannot rotate.
  • connection main body portion 31 may also be provided so that the first connection portion 2 can be enveloped from above and below.
  • first connecting portion 2 can be sandwiched between the second upper wall 311 and the second lower wall 312 of the main body portion 31, and the relative rotation between the connecting main body portion 31 and the first connecting portion 2 can be restricted.
  • connection main body portion 31 near the first body 4 has a first limiting portion 314.
  • first connection portion 2 corresponds to the first A limiting portion 24 includes a second limiting portion 24.
  • the first limiting portion 314 may be a notch; the second limiting portion 24 may be a flange.
  • the flanges enter the gap in the contracted state and play a mutual limiting role.
  • the shape of the notch and the flange match, and the specific shape is not limited. It can be understood that the first limiting portion 314 and the second limiting portion 24 are also interchangeable, that is, the first limiting portion 314 may be a flange; the second limiting portion 24 may be a gap.
  • the notch as the first limiting portion 314 may be formed at an end of the second side wall 313 and / or the second lower wall 312 near the first body 4. As shown in FIG. 3, a notch is formed at a front end portion of the second side wall 313 and the second lower wall 312, and a flange is provided below the first connection portion 2 and is located at a boundary between the first connection portion 2 and the first base portion 40. .
  • the positions, specific shapes, etc. of the notches and flanges are not limited to this.
  • the first limiting portion 314 is in contact with the second limiting portion 24 to restrict the relative upward and / or downward movement of the connecting body portion 31 and the first connecting portion 2.
  • the first limiting portion 314 and the second limiting portion 24 are joined together, and the above-mentioned setting can make their connection smoothly, and can improve the appearance quality.
  • the first connection portion 2 may be connected at a middle position of the front end surface of the first base portion 40.
  • the size of the longitudinal cross-section of the first connection portion 2 is smaller than that of the first base portion 40.
  • the first connection portion 2 and the first base portion 40 A stepped portion is formed at the connection. That is, the rear end surface of the first connection portion 2 is narrower than the front end surface of the first base portion 40, and the first connection portion 2 is connected to the middle position of the front end surface of the first base portion 40, so that a stepped portion having high and low fluctuations is formed.
  • a stepped portion may be formed on both sides of the connection portion of the first connection portion 2 and the first base portion 40.
  • connection main body portion 31 can be pieced together with the stepped portion of the first connection portion 2 to smoothly connect and improve the appearance quality.
  • the connecting main body portion 31 and the first connecting portion 2 may be provided with a latching structure that is locked in the contracted state.
  • the buckle structure may include a locking hole 315 provided in the connecting body portion 31 or the first connecting portion 2, and a locking block 23 provided in the first connecting portion 2 or the connecting body portion 31 and engaged with the locking hole 315, as shown in FIG. 3.
  • Figures 12 and 13 show.
  • a clamping hole 315 is provided on a side wall of the connection main body portion 31, and a clamping block 23 is provided on the first side wall 211 of the first connection portion 2.
  • the clamping block 23 is inserted into the clamping hole 315.
  • Both sides of the clamping block 23 can be arc-shaped, so that when a certain pressure and tension are received, the clamping block 23 can smoothly enter and exit the clamping hole 315.

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  • Aviation & Aerospace Engineering (AREA)
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Abstract

一种折叠伸缩机构，包括第一主体（4）和第二主体（5），第一主体（4）具有第一连接部（2），第二主体（5）可相对第一主体（4）转动，并具有第二连接部（3）；所述第一连接部（2）与第二连接部（3）以可移动的方式组装，并具有收缩状态与伸展状态；在所述收缩状态，所述第一连接部（2）与第二连接部（3）至少部分叠合，并限制所述第一主体（4）与第二主体（5）的相对转动；在所述伸展状态，所述第一连接部（2）与第二连接部（3）相远离，第二主体（5）可转动并折叠在所述第一主体（4）上；所述折叠伸缩机构能够折叠和伸缩，可以提高展开使用状态时连接部位的强度。

Description

折叠伸缩机构、螺旋桨保护装置及旋翼无人机 技术领域
本发明涉及一种折叠伸缩机构、螺旋桨保护装置及旋翼无人机。
背景技术
无人机在携带、运输、飞行时，在无人机上的螺旋桨都极易受到伤害，因而需要在螺旋桨上组装桨保护装置以起到桨保护作用。相关的桨保护罩能够折叠，但在展开使用时连接部位的结构强度不高，容易被撞坏。
发明内容
本发明提供一种折叠伸缩机构、螺旋桨保护装置及旋翼无人机，其中的折叠伸缩机构能够折叠和伸缩，并可以提高展开使用时连接部位的强度。
根据本发明实施例的第一方面，提供一种折叠伸缩机构，包括：
第一主体，具有第一连接部；
第二主体，第二主体可相对第一主体转动，并具有第二连接部；
所述第一连接部与第二连接部以可移动的方式组装，并具有收缩状态与伸展状态；在所述收缩状态，所述第一连接部与第二连接部至少部分叠合，并限制所述第一主体与第二主体的相对转动；在所述伸展状态，所述第一连接部与第二连接部相远离，第二主体可转动并折叠在所述第一主体上。
根据本发明实施例的第二方面，提供一种螺旋桨保护装置，包括如前述实施例中所述的折叠伸缩机构；所述第一主体为第一桨保护罩，所述第二主体为第二桨保护罩。
根据本发明实施例的第三方面，提供一种旋翼无人机，包括机体、连接于机体的第一螺旋桨和第二螺旋桨、及如前述实施例中所述的螺旋桨保护装置；
所述第一桨保护罩连接所述第一螺旋桨，所述第二桨保护罩连接所述第二螺旋桨。
本发明实施例中，第二主体可相对第一主体转动，第一主体的第一连接部和第二主体的第二连接部以可移动的方式组装，并具有收缩状态与伸展状态。在伸展状态，第二主体可转动并折叠在第一主体上，可节约所占据的面积；在收缩状态，第一主体与第二主体的相对转动被限制，第一连接部与第二连接部至少部分叠合，这提高了在该状态下第一主体和第二主体在连接处的结构强度。
附图说明
为了更清楚地说明本发明实施例中的技术方案，下面将对实施例描述中所需要使用的附图作简单地介绍，显而易见地，下面描述中的附图仅仅是本发明的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动性的前提下，还可以根据这些附图获得其他的附图。
图1是本发明一实施例的旋翼无人机的结构示意；
图2是本发明一实施例的螺旋桨保护装置的爆炸结构示意图；
图3和图4是本发明一实施例的螺旋桨保护装置的在不同视角下的局部结构示意图；
图5是本发明一实施例的螺旋桨保护装置在收缩状态的结构示意图；
图6和图7是本发明一实施例的螺旋桨保护装置在收缩状态的局部剖视图；
图8是本发明一实施例的螺旋桨保护装置的转动连接件与第一连接部在收缩状态的局部剖视图；
图9是本发明一实施例的螺旋桨保护装置的转动连接件与第一连接部在伸展状态的局部剖视图；
图10是本发明一实施例的螺旋桨保护装置在伸展状态且折叠的剖视图；
图11是本发明一实施例的螺旋桨保护装置在伸展状态且折叠的立体图；
图12是本发明一实施例的螺旋桨保护装置在收缩状态的局部结构示意图；
图13是本发明一实施例的螺旋桨保护装置在伸展状态且未折叠的局部结构示意图。
具体实施方式
下面将结合本发明实施例中的附图，对本发明实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例仅仅是本发明一部分实施例，而不是全部的实施例。基于本发明中的实施例，本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其他实施例，都属于本发明保护的范围。
这里将详细地对示例性实施例进行说明，其示例表示在附图中。下面的描述涉及附图时，除非另有表示，不同附图中的相同数字表示相同或相似的要素。以下示例性实施例中所描述的实施方式并不代表与本发明相一致的所有实施方式。相反，它们仅是与如所附权利要求书中所详述的、本发明的一些方面相一致的装置和方法的例子。
在本发明使用的术语是仅仅出于描述特定实施例的目的，而非旨在 限制本发明。在本发明和所附权利要求书中所使用的单数形式的“一种”、“所述”和“该”也旨在包括多数形式，除非上下文清楚地表示其他含义。还应当理解，本文中使用的术语“和/或”是指并包含一个或多个相关联的列出项目的任何或所有可能组合。
下面结合附图，对本发明的实施例进行详细说明。在不冲突的情况下，下述的实施例及实施方式中的特征可以相互组合。
如图1，本发明实施例的旋翼无人机包括机体9、连接于机体9的第一螺旋桨7和第二螺旋桨8、及螺旋桨保护装置1。机体9可以包括机身91和机臂92，机臂92连接于机身91。第一螺旋桨7和第二螺旋桨8连接在相邻的机臂92上。螺旋桨保护装置1连接第一螺旋桨7和第二螺旋桨8。
旋翼无人机可以是如图1所示的四旋翼无人机，当然也可以是六旋翼、八旋翼等无人机，具体不限，相应的螺旋桨数量也可根据旋翼无人机具体情况而定。第一螺旋桨和第二螺旋桨可以是旋翼无人机上相邻的螺旋桨。
如图2至图3，螺旋桨保护装置1包括折叠伸缩机构。该可折叠伸缩机构包括第一主体4和第二主体5。在折叠伸缩机构用于螺旋桨保护装置1时，第一主体4可为第一桨保护罩，第二主体5可为第二桨保护罩，两者之间可折叠伸缩连接。第一桨保护罩连接第一螺旋桨7，第二桨保护罩连接第二螺旋桨8，以起到对第一螺旋桨7和第二螺旋桨7的保护作用。
下面的实施例中以折叠伸缩机构用在螺旋桨保护装置1为例进行展开说明。可以理解，本发明实施例的折叠伸缩机构也可以用到其他装置上，实现该装置的第一主体和第二主体间可折叠伸缩连接即可，具体不做限定。
如图3至图5，第一主体4可包括第一基部40和第一连接部2。第一连接部2可一体形成于第一基部40，以保证第一主体4的强度。当然并不排除第一连接部2是通过外部连接物连接到第一基部40上的可能。
第二主体5可包括第二基部50和第二连接部3，第二基部50和第二连接部3连接。
第一基部40和第二基部50可以是对称的结构。第一基部40可包括第一弧形部401、第一梁部402及第一中心连接部403。第二基部50可包括第二弧形部501、第二梁部502及第二中心连接部503。第一弧形部401与第二弧形部501之间通过第一连接部2和第二连接部3可折叠伸缩连接。以第一基部40为例，第一弧形部401通过第一梁部402与第一中心连接部403连接，第一中心连接部403与第一螺旋桨7的桨座连接，以实现第一主体4与第一螺旋桨7的连接。第一梁部402的数量不限，例如是3根。
可以理解，第一基部40和第二基部50的具体形式也不限于此，例如第一基部40还可以是包括相连的环形部和连接臂的结构形式，第二基部50亦可如此。第一基部40通过在其连接臂上设置第一连接部2，第二基部50可通过在其连接臂上设置第二连接部3，从而实现折叠伸缩连接。
第二连接部3可以包括连接主体部31和转动连接件32。
连接主体部31固定在第二基部50上。可以理解，连接主体部31固定在第二基部50上的固定方式包括连接主体部31一体成型在第二基部50上的方式，以及其它的方式，比如，可以是螺钉锁固的方式等。
转动连接件32可以包括平板部321和凸起部，如图3、图8和图9所示。凸起部可以包括至少两个第一耳片322及至少两个第二耳片323。这些第一耳片322设置在平板部321上，并沿直线排布。第一转轴61可以穿设在第一耳片322中。这些第二耳片323设置在平板部321上，并沿直线排布。第二转轴62可以穿设在第二耳片323中。第一耳片322和第二耳片323可以对称排布在平板部321的两侧，使得转动连接件32从侧面和正面看都呈U型。
所述凸起部自平板部321的上表面向上凸出，以使第一转轴61和第 二转轴62的轴线高出于平板部321。凸起部将第一转轴61和第二转轴62抬高至高于平板部321的表面，可在一定程度上增大转动连接件32相对第一连接部2的可转动角度、相对连接主体部31的可转动角度。当然，在转动到一定角度时，平板部321可以起到一定的抵挡作用。
连接主体部31上可设置相应的轴孔，如图3、图6和图7。第一转轴61的中间部分插接在转动连接件32的凸起部内，第一转轴61的末端插接在连接主体部31的所述轴孔内。上述设置使得转动连接件32可相对连接主体部31转动，从而连接主体部31可带动第二基部50相对转动连接件32转动。
第一连接部2可以包括连接第一基部40的两个第一侧壁211，两个第一侧壁211上方设置有第一上壁212。当然，也可不设置第一上壁212，而使得两个第一侧壁211的上方敞开，以留给转动连接件32一定的折叠空间。
第一侧壁211上可设置有导向部20。导向部20可以是直线型的滑槽。当然，在其它实施例中，导向部20也可以是直线型的导轨，此处不作限制。
第二转轴62的中间部分插接在转动连接件32的凸起部内，第二转轴62的末端插接在所述直线型滑槽内。上述设置使得转动连接件32可沿所述直线型滑槽相对第一连接部2滑动，进而使得第二连接部3可相对第一连接部2移动。第二转轴62的轴向与上述滑动的滑动方向(即直线型滑槽的长度方向)垂直。在向外滑动到直线型滑槽的端部时，转动连接件32可相对第一连接部2转动，以向第一连接部2的两个第一侧壁211上方靠拢而折叠。
可以理解，在导向部20呈其他形状，例如呈弧形槽时，转动连接件32的形状也可做适应性地调整，来保证可沿导向部20往复移动及可转动 角度。
转动连接件32可带动连接主体部31及第二基部50移动而使第一连接部2与第二连接部3相远离。移动至第二连接部3与第一连接部2处于伸展状态(如图13所示)时，转动连接件32可通过第二转轴62相对导向部20转动，可实现第二连接部3与第一连接部2的相对转动，即实现第二主体5与第一主体4之间的可转动，如图9所示。进而，连接主体部31可通过第一转轴61相对转动连接件32转动，因而第二主体5与第一主体4可相折叠，如图10和图11所示。
这里所说“第一连接部2与第二连接部3相远离”是比较而言的：在伸展状态时第一连接部2与第二连接部3较远离；在收缩状态时第一连接部2与第二连接部3较接近。
转动连接件32可带动连接主体部31及第二基部50移动而使第一连接部2与第二连接部3相靠近，如图6所示，以使得第二连接部3与第一连接部2处于收缩状态。在此状态下，转动连接件32与连接主体部31至少部分叠合，转动连接件32与连接主体部31之间的相对转动、转动连接件32与第一连接部2之间的相对转动被限制。即，处于收缩状态时，第一连接部2与第二连接部3的相对转动被限制，第二主体5与第一主体4之间无法相对转动、无法折叠。
由于第一主体4和第二主体5之间可伸缩，在伸展状态时才可转动而折叠在一起，组装在螺旋桨上展开使用时处于收缩状态。在收缩状态时，第一主体4与第二主体5的相对转动被限制，第一连接部2和第二连接部3至少部分叠合，这提高了在该状态下第一主体4与第二主体5在连接处的结构强度。进而，保证了螺旋桨保护装置1在组装到旋翼无人机上时，不易受外力作用而发生相对转动。
上述实施例中，转动连接件32通过第一转轴61以可转动的方式连 接连接主体部31，通过第二转轴62以可转动的方式连接第一连接部2，以此实现在伸展状态下的第二主体5转动并折叠在第一主体1上。第一转轴61和第二转轴62的轴向平行，且轴向与转动连接件32沿导向部往复移动的方向垂直。
可以理解，转动连接件32也可仅通过第二转轴62以可转动的方式连接第一连接部2；而转动连接件32与连接主体部31之间可以不需要以可转动的方式连接，比如，转动连接件32与连接主体部31之间可以是固定连接。
第一连接部2还可以包括空腔部21。空腔部21可以包括第一侧壁211、第一上壁212和第一下壁213。第一上壁212和第一下壁213上下分布，第一上壁212和第一下壁213与第一侧壁211相连而构成空腔部21。第一侧壁211、第一上壁212和第一下壁213可均与第一基部40的前端面连接，即第一基部40的前端部分可看作是空腔部21的后壁。
空腔部21的前端面形成有开口，以使转动连接件32在移动时可从空腔部21的前端面进出空腔部21。在伸展状态时，转动连接件32伸出于空腔部21；在收缩状态时，转动连接件32收容于空腔部21中。
导向部20可以设置在空腔部21的第一侧壁211上。比如，导向部20可以为穿透第一侧壁211的直线型滑槽，也可以是未穿透第一侧壁211的直线型滑槽。
连接在第二耳片323上的第二转轴62由直线型滑槽的槽沿限制而无法移出直线型滑槽，而连接在第一耳片322上的第一转轴61则位于直线型滑槽的外侧。平板部321可沿直线型滑槽移动。直线型滑槽的长度一方面可保证平板部321伸出空腔部21时第一主体4和第二主体5间可转动折叠，另一方面可保证平板部321在回缩时可尽可能地收容至空腔部21中，例如可仅留第一转轴61所在的部位在外侧、同时第二转轴62抵靠直线型滑槽 的端部。
平板部321与空腔部21的第一上壁212可在相对转动至一定角度时相互抵靠，以限制在伸展状态转动连接件32相对第一连接部2的转动角度。优选的，在伸展状态转动连接件32相对第一连接部2的可转动角度为90度。在平板部321相对第一连接部2转动至90度时，平板部321与空腔部21的第一上壁212相抵靠。当然，也可以在空腔部21上设置挡块，以在平板部321相对第一连接部2转动至90度时抵挡平板部321。所述挡块的具体结构不限。
连接主体部31具有收容空间，以在收缩状态收容第一连接部2。也即，在收缩状态，第一连接部2不仅与转动连接件32存在叠合关系，还与连接主体部31存在叠合关系。即，在收缩状态，转动连接件32收容至第一连接部2中，第一连接部2收容在连接主体部31的收容空间中，可进一步提高折叠部位的强度。可以理解，在收缩状态，第一连接部2也可以不用收容到连接主体部31中，而只要与连接主体部31相抵而无法相对转动即可。
连接主体部31可以包括第二上壁311、第二下壁312和连接在第二上壁311和第二下壁312之间的第二侧壁313，如图3和图7。第二上壁311、第二下壁312和第二侧壁313围成可收容第一连接部2的收容空间。第二上壁311短于第二下壁312，使得收容空间分为第一空间和第二空间。第二空间比第一空间邻近第一主体4，第一空间由第二下壁312、第二上壁311和第二侧壁313围成，第二空间由第二下壁312和第二侧壁313围成。转动连接件32以可转动的方式连接在第一空间所在的第二侧壁313上，第一连接部2在收缩状态收容在第二空间内。
当然，连接主体部31的形式也不限于此。例如，第二上壁311和第二下壁312的长度可相等且对称设置。在第一连接部2收容在第二空间内时，可被第二上壁311、第二下壁312及第二侧壁313包围。又如，还可 不设置第二下壁312，并利用第二上壁311来限制转动。
第二上壁311在收缩状态与第一连接部2相接触，使得：在连接主体部31与第一连接部2具有相对运动的趋势时，通过第二上壁311与第一连接部2相抵来限制相对转动。可以理解，可以在连接主体部31上设置挡块与第一连接部2相抵来限制相对转动，而不限于第二上壁311。
优选的，第二上壁311可以在收缩状态与第一连接部2相拼合，使得第二连接部3和第一连接部2之间衔接平顺，提高整体的外观质量。
在伸展状态，连接主体部31相对转动连接件32转动时，第二上壁311可以在一定转动角度时抵挡转动连接件32，以限制可转动角度。优选的，连接主体部31相对转动连接件32的可转动角度为90度。
第一连接部2的靠近第二主体5的端部(即，第一连接部2的前端)设置有限位台22，如图4和图7。在收缩状态，第二下壁312与第一转轴61上下分布而将限位台22夹于中间。
换言之，限位台22设置在第一连接部2的前端且位于转动连接件32的下方。在收缩状态下，第一连接部2会进入到连接主体部31的收容空间，限位台22与第二下壁312接触，第一转轴61回缩到限位台22上，从而限位台22位于第二下壁312与第一转轴61之间，并被第二下壁312与第一转轴61所限制，从而保证连接主体部31和第一连接部2无法转动。
可以理解，设置限位台22，并通过第二下壁312与第一转轴61限制限位台22，并非限制连接主体部31和第一连接部2之间相对转动的唯一实现方式。例如，还可以将连接主体部31设置为上下均可包络第一连接部2。如此，可通过连接主体部31的第二上壁311和第二下壁312将第一连接部2夹于中间，进而可限制连接主体部31和第一连接部2之间的相对转动。
连接主体部31的靠近第一主体4的端部(即连接主体部31的前端 部)具有第一限位部314，如图3、图4和图7所示，第一连接部2对应第一限位部314处具有第二限位部24。
第一限位部314可为缺口；第二限位部24可为凸缘。凸缘在收缩状态进入缺口中，起到相互限位的作用。缺口和凸缘的形状匹配，具体形状不限。可以理解，第一限位部314和第二限位部24也可互换，即第一限位部314可为凸缘；第二限位部24可为缺口。
作为第一限位部314的所述缺口可形成于第二侧壁313和/或第二下壁312的靠近第一主体4的端部。如图3所示，缺口形成在第二侧壁313和第二下壁312的前端部，凸缘设置在第一连接部2的下方且位于第一连接部2和第一基部40的交界处。当然，缺口和凸缘的位置、具体形状等可并不局限于此。
在收缩状态，第一限位部314与第二限位部24接触以起到限制连接主体部31和第一连接部2相对向上和/或向下运动。优选的，在收缩状态，第一限位部314与第二限位部24相拼合，上述设置可使得它们的连接处衔接平顺，并可提高外观质量。
第一连接部2可连接在第一基部40的前端面的中部位置处，第一连接部2纵截面的尺寸小于第一基部40纵截面的尺寸，在第一连接部2和第一基部40的连接处形成台阶部。即，第一连接部2的后端面窄于第一基部40的前端面，且第一连接部2连接在第一基部40的前端面的中部位置，因而形成具有高低起伏的台阶部。可以在第一连接部2和第一基部40的连接处的两侧形成台阶部。或者，在第一连接部2不设作为第二限位部24的凸缘时，在第一连接部2和第一基部40的连接处的底部也可形成台阶部。在收缩状态，连接主体部31可与第一连接部2的台阶部拼合，衔接平顺，提高外观质量。
为了进一步提高第一主体4和第二主体5在收缩状态的稳固性，连 接主体部31与第一连接部2上可设置有在收缩状态相互卡紧的卡扣结构。
卡扣结构可以包括设于连接主体部31或第一连接部2的卡孔315、及设于第一连接部2或连接主体部31的与卡孔315配合卡接的卡块23，如图3、图12和图13所示。具体的，连接主体部31的侧壁上设置有卡孔315，第一连接部2的第一侧壁211上设置有卡块23。在收缩状态下，卡块23卡入至卡孔315中。卡块23的两侧均可呈弧形，以在收到一定压力、拉力时，可顺利进入、退出卡孔315。
可以理解，连接主体部31与第一连接部2上的上述卡扣结构也可以替换为其他形式的结构，具体不限。
需要说明的是，在本文中，诸如第一和第二等之类的关系术语仅仅用来将一个实体或者操作与另一个实体或操作区分开来，而不一定要求或者暗示这些实体或操作之间存在任何这种实际的关系或者顺序。术语“包括”、“包含”或者其任何其他变体意在涵盖非排他性的包含，从而使得包括一系列要素的过程、方法、物品或者设备不仅包括那些要素，而且还包括没有明确列出的其他要素，或者是还包括为这种过程、方法、物品或者设备所固有的要素。在没有更多限制的情况下，由语句“包括一个……”限定的要素，并不排除在包括所述要素的过程、方法、物品或者设备中还存在另外的相同要素。
以上对本发明实施例所提供的方法和装置进行了详细介绍，本文中应用了具体个例对本发明的原理及实施方式进行了阐述，以上实施例的说明只是用于帮助理解本发明的方法及其核心思想；同时，对于本领域的一般技术人员，依据本发明的思想，在具体实施方式及应用范围上均会有改变之处，综上所述，本说明书内容不应理解为对本发明的限制。
本专利文件披露的内容包含受版权保护的材料。该版权为版权所有人所有。版权所有人不反对任何人复制专利与商标局的官方记录和档案中 所存在的该专利文件或者该专利披露。

Claims (26)

  1. 一种折叠伸缩机构，其特征在于，包括：
    第一主体，具有第一连接部；
    第二主体，第二主体可相对第一主体转动，并具有第二连接部；
    所述第一连接部与第二连接部以可移动的方式组装，并具有收缩状态与伸展状态；在所述收缩状态，所述第一连接部与第二连接部至少部分叠合，并限制所述第一主体与第二主体的相对转动；在所述伸展状态，所述第一连接部与第二连接部相远离，第二主体可转动并折叠在所述第一主体上。
  2. 如权利要求1所述的折叠伸缩机构，其特征在于，第二主体包括第二基部，所述第二连接部包括：
    固定在所述第二基部上的连接主体部；
    转动连接件，所述转动连接件以可转动的方式连接所述连接主体部，所述转动连接件以可移动的方式连接所述第一连接部，以使所述第二连接部可相对第一连接部移动。
  3. 如权利要求2所述的折叠伸缩机构，其特征在于，所述转动连接件通过第一转轴以可转动的方式连接所述连接主体部，通过第二转轴以可转动的方式连接所述第一连接部；
    在所述伸展状态，所述转动连接件能够通过第一转轴相对所述连接主体部转动，且能够通过第二转轴相对所述第一连接部转动。
  4. 如权利要求3所述的折叠伸缩机构，其特征在于，所述转动连接件包括：
    平板部；
    凸起部，设置在所述平板部上，连接第一转轴和第二转轴，以使所述第一转轴和第二转轴的轴线高出于所述平板部。
  5. 如权利要求4所述的折叠伸缩机构，其特征在于，所述凸起部包括：
    至少两个第一耳片，设置在所述平板部上，连接所述第一转轴；
    至少两个第二耳片，设置在所述平板部上，连接所述第二转轴。
  6. 如权利要求2所述的折叠伸缩机构，其特征在于，所述连接主体部具有收容空间，以在所述收缩状态收容所述第一连接部。
  7. 如权利要求6所述的折叠伸缩机构，其特征在于，所述连接主体部包括第二上壁、第二下壁和连接在第二上壁和第二下壁之间的第二侧壁；
    第二上壁、第二下壁和第二侧壁围成所述收容空间；
    所述第二上壁短于所述第二下壁，使得所述收容空间分为第一空间和第二空间，所述第二空间比所述第一空间邻近第一主体，所述第一空间由第二下壁、第二上壁和第二侧壁围成，所述第二空间由第二下壁和第二侧壁围成；
    所述转动连接件以可转动的方式连接在所述第一空间所在的第二侧壁上，所述第一连接部在收缩状态收容在所述第二空间内。
  8. 如权利要求2所述的折叠伸缩机构，其特征在于，所述连接主体部具有第二上壁；所述第二上壁在所述收缩状态与所述第一连接部相接触。
  9. 如权利要求2所述的折叠伸缩机构，其特征在于，所述连接主体部具有第二下壁；所述第一连接部的靠近所述第二主体的端部设置有限位台；所述转动连接件通过第一转轴以可转动的方式连接所述连接主体部；
    在所述收缩状态，所述第二下壁与所述第一转轴上下分布而将所述限位台夹于中间。
  10. 如权利要求2所述的折叠伸缩机构，其特征在于，所述连接主体部的靠近所述第一主体的端部具有第一限位部，所述第一连接部对应所述第一限位部处具有第二限位部；
    在所述收缩状态，所述第一限位部与所述第二限位部接触。
  11. 如权利要求10所述的折叠伸缩机构，其特征在于，所述第一限位部为缺口；所述第二限位部为凸缘，所述凸缘在所述收缩状态进入所述缺口中。
  12. 如权利要求11所述的折叠伸缩机构，其特征在于，所述连接主体部具有相连的第二下壁和第二侧壁；所述缺口形成于所述第二侧壁和/或所述第二下壁的靠近所述第一主体的端部。
  13. 如权利要求2所述的折叠伸缩机构，其特征在于，所述连接主体部与所述第一连接部上设置有在所述收缩状态相互卡紧的卡扣结构。
  14. 如权利要求13所述的折叠伸缩机构，其特征在于，所述卡扣结构包括设于所述连接主体部或所述第一连接部的卡孔、及设于所述第一连接部或所述连接主体部的与所述卡孔配合卡接的卡块。
  15. 如权利要求2所述的折叠伸缩机构，其特征在于，在所述伸展状态，所述连接主体部相对所述转动连接件的可转动角度为90度。
  16. 如权利要求2所述的折叠伸缩机构，其特征在于，在所述伸展状态，所述转动连接件相对所述第一连接部的可转动角度为90度。
  17. 如权利要求2所述的折叠伸缩机构，其特征在于，所述第一连接部包括导向部，能够引导所述转动连接件沿所述导向部往复移动。
  18. 如权利要求17所述的折叠伸缩机构，其特征在于，所述第一连接部还包括空腔部；
    所述导向部设置在所述空腔部上；
    所述转动连接件能够沿所述导向部移动，在所述伸展状态所述转动连接件伸出于所述空腔部，在所述收缩状态所述转动连接件收容于所述空腔部中。
  19. 如权利要求18所述的折叠伸缩机构，其特征在于，所述空腔部包括第一侧壁，所述导向部设置在所述空腔部的第一侧壁上。
  20. 如权利要求19所述的折叠伸缩机构，其特征在于，所述空腔部还包括第一上壁和第一下壁，所述第一上壁和第一下壁与所述第一侧壁相连且上下分布。
  21. 如权利要求17所述的折叠伸缩机构，其特征在于，所述转动连接件通过第二转轴设置在所述导向部中，并在所述伸展状态可相对所述导向 部转动。
  22. 如权利要求21所述的折叠伸缩机构，其特征在于，所述导向部为直线型滑槽。
  23. 如权利要求1所述的折叠伸缩机构，其特征在于，所述第一主体包括第一基部；
    所述第一连接部一体形成于第一基部。
  24. 如权利要求23所述的折叠伸缩机构，其特征在于，所述第一连接部连接在所述第一基部的前端面的中部位置处，所述第一连接部纵截面的尺寸小于所述第一基部纵截面的尺寸，在第一连接部和第一基部的连接处形成台阶部。
  25. 一种螺旋桨保护装置，其特征在于，包括如权利要求1-24中任意一项所述的折叠伸缩机构；所述第一主体为第一桨保护罩，所述第二主体为第二桨保护罩。
  26. 一种旋翼无人机，其特征在于，包括机体、连接于机体的第一螺旋桨和第二螺旋桨、及如权利要求25所述的螺旋桨保护装置；
    所述第一桨保护罩连接所述第一螺旋桨，所述第二桨保护罩连接所述第二螺旋桨。
PCT/CN2018/095249 2018-07-11 2018-07-11 折叠伸缩机构、螺旋桨保护装置及旋翼无人机 WO2020010539A1 (zh)

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